Rotary plow



. H. 1. BENNETT.

ROTARY PLow. APPLICATION FILED V.IULY,25LI9I9.v

1,37%5149., y Patented :May 10,1921;

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ATTORNEYS.

H. J. BENNETT.

ROTARY PLOW.

APPLICATION FILED JULY 25,1919.

Patented May 10, 1921.

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INVENTOR. HL/emfzeZ-Z'.

UNITED` STATES PATENT OFFICE. A

HARRY J'. BENNETT, OF PHOENIIX, ARIZONA, ASSEGNOR 0F ONE-THIR) TO S. J'.

MICHELSON .AND ONE-THIRD T0 I. J. LIPSOI-IN, BOTH OF PHOENIX, ARIZONA. i

ROTARY PLOW.

Specification of Letters Patent. Pgfmtgd ly 10, 1g21 Application filed July 25, 1919.V Serial No. 313,322.

To all 11i/loin, t may concern."

15e it known that l, HARRY J. BENNETT, a citizen of the United tates, residing at Phoenix, in the county of Maricopa and State of Arizona, have invented new and useful Improvements in Rotary Plows, of which the following is a specification. My object is to provide a relatively simple and efficient rotary plow and my invention consists of the novel features herein shown, describedl and claimed.

Figurev 1 is a top plan view of a rotary plow embodying the principles of my invention, the view being taken looking in the direction indicated by the arrow 1 in Fig. 2, parts being broken away to show the details.

Fig. 2 is a side elevation looking in the direction indicated by the arrow 2 in F ig. 1.

The side bars have straight parallel portions 1 and 2 and inclined portions 3 and 4 extending forwardly from the portions 1 and 2 and connected together by a fitting 5. rThe rear ends `of the side bars are rigidly connected by a cross bar 6. Bearings 7 and 8 are fixed to the side bars in front of the cross bar 6 and the driving axle 9 is rotatably mounted in the bearings 7 and 8.

Traction drive wheels 10 and 11 are fixed upon the axle 9 and a sprocket 12 is fixed upon the axle 9 between the drive wheels 10 and 11. A caster 13 is operatively mounted in the fitting 5 to support the forward end of the frame. An eye' 14 extends forwardly from the fitting 5 to receive the draft rigging. A shaft 15 is mounted in bearings 16 and 17 crosswise of the forward end of the straight portion of the frame. A pulley 18 is Jfixed upon one end of the shaft, and a similar pulley 19 is fixed upon the other end of the shaft outside of the frame. A driving ratchet 2O is fixed upon the shaft inside of the side bar 2, and a` second driving ratchet 21 is fixed upon the shaft outside ofthe side bar 2, said driving ratchets pointing in opposite directions.

A pawl 22 is pivoted to the frame in position to swing into and out of engagement with the ratchet 20, and a pawl 23 is pivoted to thel frame in position to swing into andI out of engagement with the ratchet 21. A hand lever 24 is pivotally mounted on the shaft 15 and carries a pawl construction 25 to engage the ratchet 20 and a pawl construction 26 to engage the ratchet 21, so that if the pawl 22 1s thrown out of engagement with the ratchet 20 and the pawl 23 is thrown into engagement with the ratchet 21, as in Fig. 2

v i 7 and the pawl 2o held out of engagement with the ratchet 20 by pressing the handle'y 27 and the hand lever- 24- operated back and forth, the shaft 15 will be rotated in the direction indicated by the arrow 28 to rotate the pulleys 18 and 19 in the same direction, and

when the operation is reversed to rotate the shaft 15 in the other direction the pawl 23 is lthrown out, the pawl 22 thrown in, the handle 29 operated to throw the pawl 26 out, and the lever 24 moved back and forth;

A har 30 is placed in a vertical position against theouter face of the side bar 2 near its rear endand secured rigidly in place by bolts or rivets, and a similar' bar 31 is secured to the side bar 1sad bars 30 and 31 Y being in transverse alinement. Guide pulleys 32 and 33 are mounted at the upper and lower ends of the bars 30 and 31. Arms` 34 and 35 are pivotally mounted upon the outer ends of the axle 9va`nd extend backwardly a considerable distance. A cable 36 is attached tothe arm 35 and extends under the guide pulley 33 and two turns around the pulley 19 over the guidey pulley 32 and is again attached to the arm 35, so that as the' shaft 15 is rotated one way or the other the rear end of the arm 35 israised or lowered. In a like manner the cable 37 is attached to the arm 34 and controlled by the pulley 18.

' Bearings 38 and 39 extend upwardly from the arms 34. and 35 some distance behind the wheels 10 and 11, a countershaft '40 is mounted in the bearings 38 and 39, a. sprocket 41 is xed upon the center of the shaft 40, and a chain 42 connects the sprocket 41 to the sprocket 12 so as to drive the shaft 40 as the drive wheels 10 and 11 roll forwardly or backwardly upon the ground. Y

The details of the plowing element 43 are as follows:

The spindles 44 and 45 are formed upon the ends of a square head 46. Long flat plates 47 are secured against the flat sides sharpened to make cutters or plowteeth.V

The plates 47 are staggered so that the points 48 will cover the entire surface be'- tween the ends of the head 46 at a revolution of the head.

The spindles 44 and 45 are mounted in bearings at the extreme rear ends of the arms 34 and 35 and extend through the bearings, and spur gears 49 and 50 are fixed upon the outer ends of the spindles. `Spur gears 5l and 52 are fixed upon the outer ends of the shaft 40 and mesh with thel gears 49 and 50, so that as the traction drive wheels 10 and l1 roll forwardly upon the ground inthe direction indicated by the arrow 53 the gears 51 and 52 will be driven in the direction indicated by the arrow 54 and the plowing element 43 will be rotated in the direction indicated by the arrow 55.

The teeth 48 will dig up the ground and throw the loose dirt forwardly and upwardly. A shield 56 is mounted above and in front of the plowing element to prevent the dirt from being thrown forwardly of the shield. By manipulating the hand lever 24 and the handles 27 and 29 and the pawls 22 and 23 the plowing element may be raised clear of the ground to travel from one field to another, or to travel upon a road, and then by manipulating the hand lever 24 the other way the plowing element may be lowered to cut the ground to the desired depth.

VIt will be readily understood that minor changesin the size, form and construction of my improved rotary plow may be made and substituted for those herein shown and described without departing from the spirit of my invention, the scope of which is set forth in the appended claims.

Various changes maybe made without departing from the spirit of my invention as claimed.

I claim:

l. In a rotary plow, a wheel carrying axle, arms pivotally mounted on said axle and extending rearwardly therefrom, a rotary plow arranged for operation on the rear portions of said arms, driving connections between the axle and said rotary plow, pulleys journaled on parts of the plow frame above and below said arms, a shaft journaled on the plow frame, means for rotating said shaft and for holding it against rotation, pulleys on said shaft, and cables passing around said pulleys and around the pulleys that are positioned above and below the rotary plow carrying arms, and the ends of which cables are secured to said arms.

2. In a rotary plow, a vehicle including a frame, an axle journaled on said frame, and traction wheels secured on said axle, 'arms pivotally mounted on said axle and extending rearwardly therefrom, a counter shaft mounted transversely of the vehicle on said arms, a sprocket on said axle, a sprocket on said counter shaft, a chain extending over said sprockets, gear wheels on the ends of said counter shaft, a rotary plow journaled on the rear of said arms, gears on the ends of the shaft of said rotary plow meshing with the gears on the said counter shaft, a pulley shaft journaled on the for ward part of said frame, a pulley on each end of said shaft, a pulley mounted` on said frame above and below each of said arms, a cable wound around each pulley on said pulley shaft, and extending over the pulleys above and beloweach arm and secured at its ends to an arm rearwardly of its pivot, means for rotating said shaft to raise and lower said rotary plow, and means for locking said arms in raised or lowered position.

3. In a rotary plow, a vehicle including a frame, an axle journaled on said frame, and traction wheels secured on said axle, arms pivotally mounted on said axle and extending rearwardly therefrom, a counter shaft mounted transversely of the vehicle on said arms, a sprocket on said axle, a sprocket on said counter shaft, a chain extending over said sprockets, gear wheels on the ends of said counter shaft, a rotary plow journaled on the rear of said arms, gears on the ends of the shaft of said rotary plow meshing with the gears on said counter shaft, a pulley shaft journaled on the forward part of said frame, a pulley on each end of said shaft, a pulley mounted on said frame above and below each of said arms, a cable wound around each pulley on said pulley shaft, and extending over the pulleys above and below each-arm and secured at its ends to an arm rearwardly of its pivot; two ratchets on said pulley shaft, with teeth extending in opposite directions, a pawl on said frame for engaging each ratchet, for respectively holding said arms and said rotary plow in raised or lowered position, a hand lever pivoted on said pulley shaft, a pawl construction on said hand lever, for engaging each of said ratchets, and a handle at the end of said hand lever for withdrawing each pawl construction.

In testimony whereof have signed my name to this specification.

HARRY J. BENNETT. 

